Feature: 1. 1.【Multi Function】- ph test strips can be used for chemical testing, acid and alkali testing, water quality analysis, and soil testing, but also used in rainwater testing, pet water testing, and ph strips for water, and ph soap tester. 2. 2.【Highly Accuracy and Quick Readout】- 20 Pack (1600pcs) pH Test Strips are made of high-quality filter paper, extremely accurate and reliable, and quick response within 5 seconds. 3. 3.【pH 1-14 Full Range】- Alkaline test strip gets a full PH measure range of 1-14 meets all your needs. 4. 4.【Easy to Read】- pH Test Paper can be against PH color chart intervals, Lightweight for convenient use and carry. 5. 5.【Easy to Use】- Ph testing strips can be recognized the acidity and alkalinity of the solution from the color change. Specification: Material: paperColor: as shownApplication: detecting the acidity and alkalinity of the liquid to be testedQuantity: 80 pieces each pack, 20 packs in total, 1600 pieces of test paper in total Package List: 1 Box of 20 Packs of Test Papers Note: Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size.